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RULES FOR SAFE OPERATION

Safe operation of this power tool requires that you read and
understand this operator's manual and all labels affixed to
the tool. Safety is a combination of common sense, staying
alert, and knowing how your cut-off machine works.

READ ALL INSTRUCTIONS

KNOW YOUR POWER TOOL. Read the operator's
manual carefully. Learn the cut-off machine's applications
and limitations as well as the specific potential hazards
related to this tool.

GUARD AGAINST ELECTRICAL SHOCK BY
PREVENTING BODY CONTACT WITH GROUNDED
SURFACES.
 For example: pipes, radiators, ranges,
refrigerator enclosures.

KEEP GUARDS IN PLACE and in good working order.

REMOVE ADJUSTING KEYS AND WRENCHES.  Get
in the habit of checking to see that hex keys and adjusting
wrenches are removed from tool before turning it on.

KEEP THE WORK AREA CLEAN. Cluttered work areas
and work benches invite accidents. DO NOT leave tools
or pieces of work on the machine while it is in operation.

DO NOT USE IN DANGEROUS ENVIRONMENTS. Do
not use power tools near gasoline or other flammable
liquids, in damp or wet locations, or expose them to rain.
Keep the work area well lit.

KEEP CHILDREN AND VISITORS AWAY. All visitors
should wear safety glasses and be kept a safe distance
from work area. Do not let visitors contact tool or
extension cord while operating.

MAKE WORKSHOP CHILD-PROOF with padlocks and
master switches, or by removing starter keys.

DO NOT FORCE THE TOOL. It will do the job better and
safer at the rate for which it was designed.

USE THE RIGHT TOOL. Do not force the tool or
attachment to do a job it was not designed for. Don't use
it for a purpose not intended.

USE THE PROPER EXTENSION CORD. Make sure your
extension cord is in good condition. When using an
extension cord, be sure to use one heavy enough to carry
the current your product will draw. An undersized cord
will cause a drop in line voltage resulting in loss of power
and overheating. A wire gage size (A.W.G.) of at least 14
is recommended for an extension cord 25 feet or less in
length. If in doubt, use the next heavier gage. The smaller
the gage number, the heavier the cord.

INSPECT EXTENSION CORDS PERIODICALLY and
replace if damaged.

DRESS PROPERLY. Do not wear loose clothing, gloves,
neckties, rings, bracelets, or other jewelry. They can get
caught and draw you into moving parts. Rubber gloves
and nonslip footwear are recommended when working
outdoors. Also wear protective hair covering to contain
long hair.

ALWAYS WEAR SAFETY GLASSES WITH SIDE
SHIELDS.
 Everyday eyeglasses have only impact-
resistant lenses; they are NOT safety glasses.

PROTECT YOUR LUNGS. Wear a face or dust mask if
the cutting operation is dusty.

PROTECT YOUR HEARING. Wear hearing protection
during extended periods of operation.

SECURE WORK. Use clamps or a vise to hold work when
practical. It's safer than using your hand and it frees both
hands to operate tool.

DO NOT ABUSE CORD. Never yank cord to disconnect
it from receptacle. Keep cord from heat, oil, and sharp
edges.

DO NOT OVERREACH. Keep proper footing and balance
at all times.

MAINTAIN TOOLS WITH CARE. Keep tools sharp and
clean for better and safer performance. Follow
instructions for lubricating and changing accessories.

DISCONNECT ALL TOOLS. When not in use, before
servicing, or when changing attachments, wheels, bits,
cutters, etc., all tools should be disconnected.

AVOID ACCIDENTAL STARTING. Be sure switch is off
when plugging in.

USE RECOMMENDED ACCESSORIES. The use of
improper accessories may cause risk of injury.

NEVER STAND ON TOOL. Serious injury could occur if
the tool is tipped or if the wheel is unintentionally
contacted.

CHECK DAMAGED PARTS. Before further use of the
tool, a guard or other part that is damaged should be
carefully checked to determine that it will operate properly
and perform its intended function. Check for alignment of
moving parts, binding of moving parts, breakage of parts,
mounting and any other conditions that may affect its
operation. A guard or other part that is damaged must be
properly repaired or replaced by an authorized service
center to avoid risk of personal injury.

NEVER LEAVE TOOL RUNNING UNATTENDED. TURN
THE POWER OFF. 
Do not leave tool until it comes to a
complete stop.

USE ONLY CORRECT WHEELS. Do not use wheels
with incorrect size holes. Never use wheel washers or
wheel screws that are defective or incorrect. The
maximum wheel capacity of your cut-off machine is 14 in.
(356 mm).

DO NOT REMOVE THE MACHINE'S WHEEL GUARDS.
Never operate the machine with any guard or cover
removed. Make sure all guards are operating properly
before each use.

KEEP HANDS AWAY FROM CUTTING AREA. Keep
hands away from wheel. Do not reach underneath work
or around or under the wheel while the wheel is rotating.
Do not attempt to remove cut material while wheel is
moving.

Summary of Contents for C357

Page 1: ...l give you years of rugged trouble free performance CAUTION Carefully read through this entire operator s manual before using your new machine Pay close attention to the Rules for Safe Operation Warnings and Cautions If you use your machine properly and only for what it is intended you will enjoy years of safe reliable service Please fill out and return the Warranty Registration Card so we can be ...

Page 2: ...rigger Lock 9 Adjustments 10 13 Removal and Installation of Wheel 10 To Remove 10 To Install 10 Adjustable Fence 11 Cutting Angle Adjustment 11 Adjusting Width of Cut 11 Quick Lock Release Lever 12 Using The Quick Lock Release Lever and Vise Clamp 12 a To loosen 12 b To tighten 12 Depth Stop 13 Depth Stop Adjustments 13 Operation 13 15 Applications 13 Power Supply 14 Switch 14 Lock On Button 14 Cu...

Page 3: ...pment IMPORTANT Servicing requires extreme care and knowledge and should be performed only by a qualified service technician For service we suggest you return the tool to your nearest RYOBI AUTHORIZED SERVICE CENTER for repair When servic ing use only identical Ryobi replacement parts WARNING Do not attempt to operate this tool until you have read thoroughly and understand completely all instructi...

Page 4: ... caught and draw you into moving parts Rubber gloves and nonslip footwear are recommended when working outdoors Also wear protective hair covering to contain long hair ALWAYS WEAR SAFETY GLASSES WITH SIDE SHIELDS Everyday eyeglasses have only impact resistant lenses they are NOT safety glasses PROTECT YOUR LUNGS Wear a face or dust mask if the cutting operation is dusty PROTECT YOUR HEARING Wear h...

Page 5: ...ould cause the wheel to loosen and could create a hazard Should this ever occur stand clear and allow the wheel to come to a complete stop Disconnect your cut off machine from the power supply and securely retighten the wheel arbor bolt REPLACEMENT PARTS All repairs whether electrical or mechanical should be made at a Ryobi Authorized Service Center WARNING When servicing use only identical Ryobi ...

Page 6: ...he cutting area and position the cord so that it will not be caught on material tools or other objects during cutting ELECTRICAL CONNECTION Your Abrasive Cut Off Machine is powered by a precision built electric motor It should be connected to a power supply that is 120 volts 60 Hz AC only normal house hold current Do not operate this tool on direct current DC A substantial voltage drop will cause ...

Page 7: ...o do so could result in possible serious injury LOOSE PARTS LIST The following items are included with your C357 Abrasive Cut Off Machine 14 in 356 mm Abrasive Wheel Installed on Machine Wheel Wrench 8 mm Hex Key Stored on Machine Operator s Manual Warranty Registration UNPACKING AND LOOSE PARTS PRODUCT SPECIFICATIONS Wheel Type Reinforced Abrasive Wheels Wheel Diameter 14 in 356 mm Wheel Thicknes...

Page 8: ...wheel It retracts over the upper wheel guard as the wheel is lowered into the workpiece VISE CLAMP See Figure 2 A vise clamp has been provided with your cut off machine It is located on the end of the vise screw and provides greater control by clamping the workpiece to the fence It also prevents the workpiece from creeping toward the wheel during a cutting operation ADJUSTABLE FENCE See Figure 2 T...

Page 9: ...is convenient when continuous cutting for extended periods of time is required To engage the lock on feature depress switch trigger push in and hold the lock on button located on the side of the handle then release switch trigger Release lock on button and machine will continue running Toreleaselock onfeature depressswitchtriggerandrelease If you have the lock on feature engaged during use and you...

Page 10: ...ndle locks preventing shaft from rotating Using the 8 mm hex key provided loosen and remove bolt Note Bolt has right hand threads Turn bolt counterclockwise to loosen Remove outer washer outer flange spacer and wheel Do not remove inner flange or inner washer Removal of these two parts are not required for wheel changes WARNING If inner flange or inner washer has been removed replace both before p...

Page 11: ...ise cuts check the angle of cut for the fence against the abrasive wheel with a protractor bevel square or other similar device Using the 8 mm hex key supplied securely tighten socket head bolts Return hex key to its storage area in base This will secure the fence in place at desired angle See Figure 6 ADJUSTING WIDTH OF CUT See Figures 7 and 8 Unplug your cut off machine WARNING Failure to unplug...

Page 12: ...nd thick pieces of stock such as square or tube stock QUICK LOCK RELEASE LEVER See Figures 9 and 10 The quick lock release lever engages the vise clamp to be used along with the fence to provide a vise for securing the workpiece to be cut It also allows you to open and close the vise quickly without repetitive turning of the vise crank handle USING THE QUICK LOCK RELEASE LEVER AND VISE CLAMP To lo...

Page 13: ... possible serious personal injury Loosen the depth stop bolt that is against the machine base The depth stop is lowered by turning the depth stop bolt clockwise and raised by turning the bolt counterclockwise By pressing down on the machine arm lower the wheel and check clearance and maximum cutting distance distance from adjustable stationary vise where wheel enters to front of machine base slot ...

Page 14: ... feature immediately CUTTING WITH YOUR CUT OFF MACHINE See Figures 12 and 13 WARNING Do not attempt to cut wood or masonry with this cut off machine Never cut magnesium or magnesium alloy with this machine Failure to comply could result in serious personal injury To prevent machine movement or tipping during cutting procedure secure cut off machine in place to a workbench or work surface that is a...

Page 15: ...x key supplied loosen the socket head bolts securing the fence See Figures 14 and 15 Rotate the adjustable fence to the angle needed Retighten socket head bolts securing fence Return hex key to its storage area in base WARNING To avoid serious personal injury always tighten socket head bolts securely before making a cut Failure to do so could result in movement of the workpiece while making a cut ...

Page 16: ...lectrical shock resulting in serious injury WARNING Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust If operation is dusty also wear a dust mask WARNING When servicing use only identical Ryobi replacement parts Use of any other part may create a hazard or cause product damage GENERAL Avoid using solvents when cleaning plastic parts Mos...

Page 17: ...Check for wear Replace both brushes when either has less than 1 4 in length of carbon remaining Do not replace one side without replacing the other Reassemble using new brush assemblies Make sure curvature of brush matches curvature of motor and that brush moves freely in brush tube BRUSH CAP BRUSH ASSEMBLY MAINTENANCE BRUSH ASSEMBLY BRUSH CAP Make sure brush cap is oriented correctly straight and...

Page 18: ... 3 Have an electrician replace with a 15 wrong size or defective amp fuse or circuit breaker Motor overheats 1 Motor is overloaded 1 Request a voltage check from the power company 2 Wheel is being fed into work too fast 2 Feed wheel into work slower Machine is noisy when running 1 Motor needs attention 1 Have the motor checked at your nearest authorized service center Wheel hits table 1 Wheel not ...

Page 19: ...Page 19 NOTES NOTES ...

Page 20: ...14 in 356 mm Abrasive Cut Off Model C357 Ampere rating on tool data plate 0 2 0 2 1 3 4 3 5 5 0 5 1 7 0 7 1 12 0 12 1 16 0 Cord Length Wire Size A W G 25 16 16 16 16 14 14 50 16 16 16 14 14 12 100 16 16 14 12 10 CAUTION Keep the extension cord clear of the working area Position the cord so that it will not get caught on workpiece tools or other obstructions while you are working with a power tool ...

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